/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label17.c


--------------------------------------------------------------------------------


This is Ultimate 0.1.25-adbd35c
[2020-10-13 06:47:45,608 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-10-13 06:47:45,611 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-13 06:47:45,652 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-13 06:47:45,652 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-13 06:47:45,663 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-13 06:47:45,664 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-13 06:47:45,668 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-13 06:47:45,671 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-13 06:47:45,673 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-10-13 06:47:45,675 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
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[2020-10-13 06:47:45,676 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-13 06:47:45,679 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-13 06:47:45,681 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-13 06:47:45,682 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-13 06:47:45,684 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-13 06:47:45,685 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-13 06:47:45,686 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-13 06:47:45,692 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-13 06:47:45,693 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-13 06:47:45,695 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-13 06:47:45,696 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-10-13 06:47:45,697 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-13 06:47:45,701 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-13 06:47:45,702 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-13 06:47:45,702 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-13 06:47:45,704 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-13 06:47:45,705 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-13 06:47:45,707 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-13 06:47:45,707 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-13 06:47:45,708 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-13 06:47:45,708 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-13 06:47:45,709 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-13 06:47:45,710 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-13 06:47:45,710 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-13 06:47:45,711 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-13 06:47:45,711 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-13 06:47:45,711 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-10-13 06:47:45,712 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-10-13 06:47:45,713 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-10-13 06:47:45,714 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-10-13 06:47:45,752 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-13 06:47:45,753 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-13 06:47:45,755 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-13 06:47:45,755 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-10-13 06:47:45,755 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-10-13 06:47:45,755 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-13 06:47:45,756 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-13 06:47:45,756 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-13 06:47:45,756 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-13 06:47:45,756 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-13 06:47:45,757 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-13 06:47:45,758 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-13 06:47:45,758 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-13 06:47:45,758 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-13 06:47:45,758 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-13 06:47:45,759 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-13 06:47:45,759 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-13 06:47:45,759 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-13 06:47:45,759 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-10-13 06:47:45,760 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-13 06:47:45,760 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-13 06:47:45,760 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-13 06:47:45,760 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-13 06:47:45,760 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-10-13 06:47:45,761 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-13 06:47:45,761 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-10-13 06:47:45,761 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-13 06:47:45,761 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-13 06:47:45,761 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-10-13 06:47:45,761 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true;
[2020-10-13 06:47:46,026 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-13 06:47:46,038 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-13 06:47:46,041 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-13 06:47:46,043 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-13 06:47:46,043 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-13 06:47:46,044 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label17.c
[2020-10-13 06:47:46,099 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/024aabecc/75246b377d6a4a158d3af792761b9356/FLAG8163747e0
[2020-10-13 06:47:47,089 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-13 06:47:47,090 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label17.c
[2020-10-13 06:47:47,147 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/024aabecc/75246b377d6a4a158d3af792761b9356/FLAG8163747e0
[2020-10-13 06:47:47,425 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/024aabecc/75246b377d6a4a158d3af792761b9356
[2020-10-13 06:47:47,435 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-13 06:47:47,437 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-13 06:47:47,439 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-13 06:47:47,439 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-13 06:47:47,442 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-13 06:47:47,443 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:47:47" (1/1) ...
[2020-10-13 06:47:47,446 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f2210ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:47, skipping insertion in model container
[2020-10-13 06:47:47,446 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:47:47" (1/1) ...
[2020-10-13 06:47:47,454 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-13 06:47:47,707 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-13 06:47:49,827 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-13 06:47:49,833 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-13 06:47:51,124 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-13 06:47:51,189 INFO  L208         MainTranslator]: Completed translation
[2020-10-13 06:47:51,191 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:51 WrapperNode
[2020-10-13 06:47:51,191 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-13 06:47:51,192 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-13 06:47:51,192 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-13 06:47:51,192 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-13 06:47:51,206 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:51" (1/1) ...
[2020-10-13 06:47:51,208 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:51" (1/1) ...
[2020-10-13 06:47:51,286 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:51" (1/1) ...
[2020-10-13 06:47:51,287 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:51" (1/1) ...
[2020-10-13 06:47:51,439 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:51" (1/1) ...
[2020-10-13 06:47:51,490 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:51" (1/1) ...
[2020-10-13 06:47:51,656 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:51" (1/1) ...
[2020-10-13 06:47:51,708 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-13 06:47:51,709 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-13 06:47:51,709 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-13 06:47:51,709 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-13 06:47:51,710 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:51" (1/1) ...
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-13 06:47:51,783 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-13 06:47:51,783 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-13 06:47:51,784 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-10-13 06:47:51,784 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2020-10-13 06:47:51,784 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2020-10-13 06:47:51,784 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2020-10-13 06:47:51,784 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output5
[2020-10-13 06:47:51,786 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output6
[2020-10-13 06:47:51,786 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output7
[2020-10-13 06:47:51,786 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output8
[2020-10-13 06:47:51,786 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-10-13 06:47:51,786 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-10-13 06:47:51,787 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2020-10-13 06:47:51,787 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2020-10-13 06:47:51,787 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2020-10-13 06:47:51,788 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output5
[2020-10-13 06:47:51,788 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output6
[2020-10-13 06:47:51,788 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output7
[2020-10-13 06:47:51,788 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output8
[2020-10-13 06:47:51,789 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-10-13 06:47:51,789 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-13 06:47:51,789 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-10-13 06:47:51,789 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-10-13 06:47:51,789 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-13 06:47:51,790 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-13 06:47:59,503 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-13 06:47:59,503 INFO  L295             CfgBuilder]: Removed 1 assume(true) statements.
[2020-10-13 06:47:59,520 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:47:59 BoogieIcfgContainer
[2020-10-13 06:47:59,520 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-13 06:47:59,523 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-13 06:47:59,524 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-13 06:47:59,528 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-13 06:47:59,528 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:47:47" (1/3) ...
[2020-10-13 06:47:59,529 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10990ccd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:47:59, skipping insertion in model container
[2020-10-13 06:47:59,529 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:51" (2/3) ...
[2020-10-13 06:47:59,530 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10990ccd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:47:59, skipping insertion in model container
[2020-10-13 06:47:59,530 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:47:59" (3/3) ...
[2020-10-13 06:47:59,532 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem05_label17.c
[2020-10-13 06:47:59,542 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-13 06:47:59,553 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-13 06:47:59,564 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-13 06:47:59,592 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-10-13 06:47:59,593 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-10-13 06:47:59,593 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-10-13 06:47:59,593 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-13 06:47:59,593 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-13 06:47:59,593 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-10-13 06:47:59,593 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-13 06:47:59,593 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-13 06:47:59,639 INFO  L276                IsEmpty]: Start isEmpty. Operand 2222 states.
[2020-10-13 06:47:59,735 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1692
[2020-10-13 06:47:59,735 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-13 06:47:59,738 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-13 06:47:59,738 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-13 06:47:59,744 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-13 06:47:59,746 INFO  L82        PathProgramCache]: Analyzing trace with hash 992158784, now seen corresponding path program 1 times
[2020-10-13 06:47:59,754 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-13 06:47:59,754 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1279343717]
[2020-10-13 06:47:59,756 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-13 06:48:00,665 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 06:48:01,265 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:48:05,839 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 06:48:05,840 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1713
[2020-10-13 06:48:05,840 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-13 06:48:05,840 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5164
[2020-10-13 06:48:05,843 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 06:48:05,844 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 20
[2020-10-13 06:48:05,844 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-13 06:48:05,844 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1707
[2020-10-13 06:48:05,844 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-10-13 06:48:07,433 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-13 06:48:07,443 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 06:48:07,447 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:48:07,472 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 06:48:07,472 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-13 06:48:07,473 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-13 06:48:07,473 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 27
[2020-10-13 06:48:07,473 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 06:48:07,474 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-13 06:48:07,474 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-13 06:48:07,474 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-13 06:48:07,474 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-13 06:48:10,019 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-13 06:48:10,020 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1279343717]
[2020-10-13 06:48:10,022 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-13 06:48:10,022 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-10-13 06:48:10,023 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904116475]
[2020-10-13 06:48:10,033 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-10-13 06:48:10,033 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-13 06:48:10,047 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-10-13 06:48:10,048 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-10-13 06:48:10,050 INFO  L87              Difference]: Start difference. First operand 2222 states. Second operand 5 states.
[2020-10-13 06:48:34,223 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-13 06:48:34,223 INFO  L93              Difference]: Finished difference Result 8279 states and 15699 transitions.
[2020-10-13 06:48:34,224 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-10-13 06:48:34,225 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 1691
[2020-10-13 06:48:34,242 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-13 06:48:34,300 INFO  L225             Difference]: With dead ends: 8279
[2020-10-13 06:48:34,301 INFO  L226             Difference]: Without dead ends: 5989
[2020-10-13 06:48:34,313 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2020-10-13 06:48:34,341 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5989 states.
[2020-10-13 06:48:34,562 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5989 to 5833.
[2020-10-13 06:48:34,563 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5833 states.
[2020-10-13 06:48:34,590 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5833 states to 5833 states and 10149 transitions.
[2020-10-13 06:48:34,593 INFO  L78                 Accepts]: Start accepts. Automaton has 5833 states and 10149 transitions. Word has length 1691
[2020-10-13 06:48:34,597 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-13 06:48:34,597 INFO  L479      AbstractCegarLoop]: Abstraction has 5833 states and 10149 transitions.
[2020-10-13 06:48:34,597 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-10-13 06:48:34,598 INFO  L276                IsEmpty]: Start isEmpty. Operand 5833 states and 10149 transitions.
[2020-10-13 06:48:34,715 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1725
[2020-10-13 06:48:34,715 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-13 06:48:34,716 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-13 06:48:34,717 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-13 06:48:34,717 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-13 06:48:34,717 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-13 06:48:34,719 INFO  L82        PathProgramCache]: Analyzing trace with hash -381708634, now seen corresponding path program 1 times
[2020-10-13 06:48:34,719 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-13 06:48:34,719 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824201416]
[2020-10-13 06:48:34,720 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-13 06:48:34,852 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 06:48:34,886 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:48:34,974 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:48:39,873 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 06:48:39,874 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1750
[2020-10-13 06:48:39,874 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-13 06:48:39,874 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5018
[2020-10-13 06:48:39,875 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 06:48:39,879 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-13 06:48:39,879 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-13 06:48:39,880 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 18
[2020-10-13 06:48:39,880 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 5
[2020-10-13 06:48:40,395 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-13 06:48:40,398 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 06:48:40,400 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:48:40,404 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 06:48:40,404 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-13 06:48:40,404 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-13 06:48:40,404 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-10-13 06:48:40,405 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 06:48:40,405 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-13 06:48:40,405 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-13 06:48:40,405 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-13 06:48:40,406 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-13 06:48:40,426 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-13 06:48:40,429 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 06:48:40,432 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:48:40,451 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 06:48:40,451 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-10-13 06:48:40,451 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-13 06:48:40,452 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 21
[2020-10-13 06:48:40,452 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 06:48:40,452 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-13 06:48:40,452 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-13 06:48:40,452 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 13
[2020-10-13 06:48:40,453 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-13 06:48:40,480 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20
[2020-10-13 06:48:40,486 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 06:48:40,490 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:48:40,501 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 06:48:40,501 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 22
[2020-10-13 06:48:40,501 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-13 06:48:40,502 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 14
[2020-10-13 06:48:40,502 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 06:48:40,502 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-13 06:48:40,502 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 19
[2020-10-13 06:48:40,503 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-13 06:48:40,503 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-13 06:48:41,539 INFO  L134       CoverageAnalysis]: Checked inductivity of 39 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2020-10-13 06:48:41,539 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [824201416]
[2020-10-13 06:48:41,539 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-13 06:48:41,540 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-10-13 06:48:41,540 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325021380]
[2020-10-13 06:48:41,545 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-13 06:48:41,546 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-13 06:48:41,546 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-13 06:48:41,546 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2020-10-13 06:48:41,546 INFO  L87              Difference]: Start difference. First operand 5833 states and 10149 transitions. Second operand 7 states.
[2020-10-13 06:49:02,260 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-13 06:49:02,261 INFO  L93              Difference]: Finished difference Result 17187 states and 30378 transitions.
[2020-10-13 06:49:02,261 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2020-10-13 06:49:02,262 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1724
[2020-10-13 06:49:02,262 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-13 06:49:02,326 INFO  L225             Difference]: With dead ends: 17187
[2020-10-13 06:49:02,326 INFO  L226             Difference]: Without dead ends: 11360
[2020-10-13 06:49:02,345 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110
[2020-10-13 06:49:02,358 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11360 states.
[2020-10-13 06:49:02,633 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11360 to 11247.
[2020-10-13 06:49:02,633 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 11247 states.
[2020-10-13 06:49:02,667 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11247 states to 11247 states and 17629 transitions.
[2020-10-13 06:49:02,667 INFO  L78                 Accepts]: Start accepts. Automaton has 11247 states and 17629 transitions. Word has length 1724
[2020-10-13 06:49:02,668 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-13 06:49:02,668 INFO  L479      AbstractCegarLoop]: Abstraction has 11247 states and 17629 transitions.
[2020-10-13 06:49:02,668 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-13 06:49:02,669 INFO  L276                IsEmpty]: Start isEmpty. Operand 11247 states and 17629 transitions.
[2020-10-13 06:49:02,741 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1724
[2020-10-13 06:49:02,741 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-13 06:49:02,742 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-13 06:49:02,743 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-13 06:49:02,743 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-13 06:49:02,743 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-13 06:49:02,744 INFO  L82        PathProgramCache]: Analyzing trace with hash 495525242, now seen corresponding path program 1 times
[2020-10-13 06:49:02,745 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-13 06:49:02,745 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128545233]
[2020-10-13 06:49:02,745 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-13 06:49:03,181 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 06:49:03,628 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:49:04,140 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:49:08,225 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 06:49:08,226 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1747
[2020-10-13 06:49:08,227 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-13 06:49:08,227 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5040
[2020-10-13 06:49:08,227 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 06:49:08,227 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-13 06:49:08,227 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-13 06:49:08,228 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 38
[2020-10-13 06:49:08,229 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-13 06:49:09,215 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-13 06:49:09,218 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 06:49:09,220 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:49:09,226 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 06:49:09,226 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-13 06:49:09,226 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-13 06:49:09,227 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-10-13 06:49:09,227 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 06:49:09,227 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-13 06:49:09,227 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-13 06:49:09,227 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-13 06:49:09,228 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-13 06:49:09,246 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-13 06:49:09,254 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 06:49:09,260 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:49:09,309 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 06:49:09,309 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 33
[2020-10-13 06:49:09,309 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-13 06:49:09,309 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 54
[2020-10-13 06:49:09,310 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 06:49:09,310 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-13 06:49:09,310 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-13 06:49:09,310 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 33
[2020-10-13 06:49:09,310 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-13 06:49:10,534 INFO  L134       CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-13 06:49:10,534 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1128545233]
[2020-10-13 06:49:10,534 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-13 06:49:10,535 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-13 06:49:10,535 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460771695]
[2020-10-13 06:49:10,537 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-13 06:49:10,537 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-13 06:49:10,538 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-13 06:49:10,538 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2020-10-13 06:49:10,538 INFO  L87              Difference]: Start difference. First operand 11247 states and 17629 transitions. Second operand 7 states.
[2020-10-13 06:49:31,365 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-13 06:49:31,365 INFO  L93              Difference]: Finished difference Result 27958 states and 43345 transitions.
[2020-10-13 06:49:31,367 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2020-10-13 06:49:31,367 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1723
[2020-10-13 06:49:31,367 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-13 06:49:31,437 INFO  L225             Difference]: With dead ends: 27958
[2020-10-13 06:49:31,437 INFO  L226             Difference]: Without dead ends: 16717
[2020-10-13 06:49:31,466 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110
[2020-10-13 06:49:31,484 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 16717 states.
[2020-10-13 06:49:31,758 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 16717 to 16686.
[2020-10-13 06:49:31,759 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 16686 states.
[2020-10-13 06:49:31,787 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 16686 states to 16686 states and 22970 transitions.
[2020-10-13 06:49:31,787 INFO  L78                 Accepts]: Start accepts. Automaton has 16686 states and 22970 transitions. Word has length 1723
[2020-10-13 06:49:31,788 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-13 06:49:31,788 INFO  L479      AbstractCegarLoop]: Abstraction has 16686 states and 22970 transitions.
[2020-10-13 06:49:31,788 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-13 06:49:31,788 INFO  L276                IsEmpty]: Start isEmpty. Operand 16686 states and 22970 transitions.
[2020-10-13 06:49:31,852 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1804
[2020-10-13 06:49:31,853 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-13 06:49:31,854 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-13 06:49:31,854 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-13 06:49:31,863 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-13 06:49:31,863 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-13 06:49:31,864 INFO  L82        PathProgramCache]: Analyzing trace with hash 131945632, now seen corresponding path program 1 times
[2020-10-13 06:49:31,864 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-13 06:49:31,865 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1744463383]
[2020-10-13 06:49:31,865 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-13 06:49:32,002 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 06:49:32,048 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:49:32,151 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:49:32,463 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:49:34,357 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:49:37,126 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 06:49:37,126 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1829
[2020-10-13 06:49:37,126 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-10-13 06:49:37,126 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5119
[2020-10-13 06:49:37,127 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 06:49:37,127 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-13 06:49:37,127 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 122
[2020-10-13 06:49:37,127 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-13 06:49:37,127 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-13 06:49:37,522 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-13 06:49:37,523 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 06:49:37,524 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:49:37,528 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 06:49:37,528 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-13 06:49:37,529 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-13 06:49:37,529 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-10-13 06:49:37,529 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 06:49:37,529 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-13 06:49:37,529 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-13 06:49:37,530 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-13 06:49:37,530 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-13 06:49:37,546 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-13 06:49:37,551 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 06:49:37,552 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:49:37,572 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 06:49:37,572 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 75
[2020-10-13 06:49:37,573 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-13 06:49:37,573 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 21
[2020-10-13 06:49:37,573 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 06:49:37,573 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-13 06:49:37,573 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-13 06:49:37,574 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-13 06:49:37,574 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-13 06:49:37,594 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82
[2020-10-13 06:49:37,604 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 06:49:37,610 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:49:37,636 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 06:49:37,636 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 39
[2020-10-13 06:49:37,637 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-13 06:49:37,637 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 31
[2020-10-13 06:49:37,637 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 06:49:37,637 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-13 06:49:37,637 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 31
[2020-10-13 06:49:37,638 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-13 06:49:37,638 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-13 06:49:38,849 INFO  L134       CoverageAnalysis]: Checked inductivity of 140 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked.
[2020-10-13 06:49:38,849 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1744463383]
[2020-10-13 06:49:38,849 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-13 06:49:38,850 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-10-13 06:49:38,850 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693046762]
[2020-10-13 06:49:38,852 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-10-13 06:49:38,853 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-13 06:49:38,853 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-10-13 06:49:38,853 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-10-13 06:49:38,853 INFO  L87              Difference]: Start difference. First operand 16686 states and 22970 transitions. Second operand 5 states.
[2020-10-13 06:49:58,991 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-13 06:49:58,991 INFO  L93              Difference]: Finished difference Result 38774 states and 55189 transitions.
[2020-10-13 06:49:58,992 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-10-13 06:49:58,992 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 1803
[2020-10-13 06:49:58,993 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-13 06:49:59,070 INFO  L225             Difference]: With dead ends: 38774
[2020-10-13 06:49:59,070 INFO  L226             Difference]: Without dead ends: 22094
[2020-10-13 06:49:59,107 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2020-10-13 06:49:59,137 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 22094 states.
[2020-10-13 06:49:59,484 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 22094 to 22075.
[2020-10-13 06:49:59,484 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 22075 states.
[2020-10-13 06:49:59,528 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22075 states to 22075 states and 30110 transitions.
[2020-10-13 06:49:59,529 INFO  L78                 Accepts]: Start accepts. Automaton has 22075 states and 30110 transitions. Word has length 1803
[2020-10-13 06:49:59,530 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-13 06:49:59,531 INFO  L479      AbstractCegarLoop]: Abstraction has 22075 states and 30110 transitions.
[2020-10-13 06:49:59,531 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-10-13 06:49:59,531 INFO  L276                IsEmpty]: Start isEmpty. Operand 22075 states and 30110 transitions.
[2020-10-13 06:49:59,620 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1812
[2020-10-13 06:49:59,621 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-13 06:49:59,622 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-13 06:49:59,623 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-10-13 06:49:59,623 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-13 06:49:59,623 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-13 06:49:59,624 INFO  L82        PathProgramCache]: Analyzing trace with hash 1259084377, now seen corresponding path program 1 times
[2020-10-13 06:49:59,624 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-13 06:49:59,624 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1946619735]
[2020-10-13 06:49:59,624 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-13 06:49:59,751 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 06:49:59,790 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:49:59,885 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:50:00,223 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:50:04,799 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 06:50:04,799 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1837
[2020-10-13 06:50:04,799 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-13 06:50:04,799 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5042
[2020-10-13 06:50:04,800 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 06:50:04,800 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-13 06:50:04,800 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 84
[2020-10-13 06:50:04,800 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 49
[2020-10-13 06:50:04,800 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-13 06:50:05,091 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-13 06:50:05,093 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 06:50:05,094 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:50:05,096 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 06:50:05,096 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-13 06:50:05,096 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-13 06:50:05,096 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-13 06:50:05,097 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 06:50:05,097 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-13 06:50:05,097 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-13 06:50:05,097 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-13 06:50:05,097 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-13 06:50:05,114 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-13 06:50:05,127 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 06:50:05,133 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:50:05,162 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 06:50:05,162 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 75
[2020-10-13 06:50:05,163 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-13 06:50:05,163 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 35
[2020-10-13 06:50:05,163 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 06:50:05,163 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-13 06:50:05,163 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-13 06:50:05,163 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 69
[2020-10-13 06:50:05,163 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-13 06:50:05,182 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82
[2020-10-13 06:50:05,189 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 06:50:05,195 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:50:05,228 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 06:50:05,228 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 47
[2020-10-13 06:50:05,228 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-13 06:50:05,228 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 38
[2020-10-13 06:50:05,228 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 06:50:05,229 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-13 06:50:05,229 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-13 06:50:05,229 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 47
[2020-10-13 06:50:05,229 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-13 06:50:06,458 INFO  L134       CoverageAnalysis]: Checked inductivity of 160 backedges. 157 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-10-13 06:50:06,458 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1946619735]
[2020-10-13 06:50:06,458 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-13 06:50:06,458 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8
[2020-10-13 06:50:06,459 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943692736]
[2020-10-13 06:50:06,460 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-10-13 06:50:06,460 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-13 06:50:06,460 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-10-13 06:50:06,460 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2020-10-13 06:50:06,461 INFO  L87              Difference]: Start difference. First operand 22075 states and 30110 transitions. Second operand 8 states.
[2020-10-13 06:50:34,824 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-13 06:50:34,824 INFO  L93              Difference]: Finished difference Result 88426 states and 131890 transitions.
[2020-10-13 06:50:34,825 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2020-10-13 06:50:34,825 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 1811
[2020-10-13 06:50:34,825 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-13 06:50:35,013 INFO  L225             Difference]: With dead ends: 88426
[2020-10-13 06:50:35,013 INFO  L226             Difference]: Without dead ends: 66357
[2020-10-13 06:50:35,087 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240
[2020-10-13 06:50:35,156 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 66357 states.
[2020-10-13 06:50:36,267 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 66357 to 65997.
[2020-10-13 06:50:36,268 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 65997 states.
[2020-10-13 06:50:36,420 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 65997 states to 65997 states and 93954 transitions.
[2020-10-13 06:50:36,422 INFO  L78                 Accepts]: Start accepts. Automaton has 65997 states and 93954 transitions. Word has length 1811
[2020-10-13 06:50:36,423 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-13 06:50:36,423 INFO  L479      AbstractCegarLoop]: Abstraction has 65997 states and 93954 transitions.
[2020-10-13 06:50:36,423 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-10-13 06:50:36,423 INFO  L276                IsEmpty]: Start isEmpty. Operand 65997 states and 93954 transitions.
[2020-10-13 06:50:36,606 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1822
[2020-10-13 06:50:36,606 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-13 06:50:36,608 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-13 06:50:36,608 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-10-13 06:50:36,608 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-13 06:50:36,608 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-13 06:50:36,609 INFO  L82        PathProgramCache]: Analyzing trace with hash -969384307, now seen corresponding path program 1 times
[2020-10-13 06:50:36,609 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-13 06:50:36,610 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1534856491]
[2020-10-13 06:50:36,610 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-13 06:50:36,746 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 06:50:36,785 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:50:36,878 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:50:37,140 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:50:42,415 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 06:50:42,416 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1847
[2020-10-13 06:50:42,416 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-13 06:50:42,416 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5665
[2020-10-13 06:50:42,416 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 06:50:42,416 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-13 06:50:42,417 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 84
[2020-10-13 06:50:42,417 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 59
[2020-10-13 06:50:42,417 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-13 06:50:42,911 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-13 06:50:42,913 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 06:50:42,914 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:50:42,916 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 06:50:42,916 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-13 06:50:42,916 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-13 06:50:42,916 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-13 06:50:42,916 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 06:50:42,916 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-13 06:50:42,917 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-13 06:50:42,917 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-13 06:50:42,917 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-13 06:50:42,934 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-13 06:50:42,948 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 06:50:42,957 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:50:42,996 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 06:50:42,997 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 75
[2020-10-13 06:50:42,997 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-13 06:50:42,997 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 47
[2020-10-13 06:50:42,997 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 06:50:42,997 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-13 06:50:42,997 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-13 06:50:42,998 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 69
[2020-10-13 06:50:42,998 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-13 06:50:43,016 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82
[2020-10-13 06:50:43,027 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 06:50:43,035 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:50:43,122 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 06:50:43,123 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 57
[2020-10-13 06:50:43,123 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-13 06:50:43,123 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 94
[2020-10-13 06:50:43,124 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 06:50:43,124 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-13 06:50:43,124 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-13 06:50:43,124 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 57
[2020-10-13 06:50:43,125 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-13 06:50:45,093 INFO  L134       CoverageAnalysis]: Checked inductivity of 180 backedges. 177 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-10-13 06:50:45,093 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1534856491]
[2020-10-13 06:50:45,093 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-13 06:50:45,094 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-10-13 06:50:45,094 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167442394]
[2020-10-13 06:50:45,096 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-13 06:50:45,096 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-13 06:50:45,096 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-13 06:50:45,096 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-13 06:50:45,096 INFO  L87              Difference]: Start difference. First operand 65997 states and 93954 transitions. Second operand 7 states.
[2020-10-13 06:51:08,179 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-13 06:51:08,179 INFO  L93              Difference]: Finished difference Result 155113 states and 229118 transitions.
[2020-10-13 06:51:08,180 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-13 06:51:08,180 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1821
[2020-10-13 06:51:08,181 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-13 06:51:08,475 INFO  L225             Difference]: With dead ends: 155113
[2020-10-13 06:51:08,475 INFO  L226             Difference]: Without dead ends: 89122
[2020-10-13 06:51:08,578 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2020-10-13 06:51:08,665 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 89122 states.
[2020-10-13 06:51:10,142 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 89122 to 88857.
[2020-10-13 06:51:10,143 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 88857 states.
[2020-10-13 06:51:10,472 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 88857 states to 88857 states and 127678 transitions.
[2020-10-13 06:51:10,476 INFO  L78                 Accepts]: Start accepts. Automaton has 88857 states and 127678 transitions. Word has length 1821
[2020-10-13 06:51:10,477 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-13 06:51:10,477 INFO  L479      AbstractCegarLoop]: Abstraction has 88857 states and 127678 transitions.
[2020-10-13 06:51:10,477 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-13 06:51:10,477 INFO  L276                IsEmpty]: Start isEmpty. Operand 88857 states and 127678 transitions.
[2020-10-13 06:51:10,757 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1880
[2020-10-13 06:51:10,757 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-13 06:51:10,759 INFO  L422         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2020-10-13 06:51:10,759 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-10-13 06:51:10,759 INFO  L427      AbstractCegarLoop]: === Iteration 7 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-13 06:51:10,760 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-13 06:51:10,760 INFO  L82        PathProgramCache]: Analyzing trace with hash 178349499, now seen corresponding path program 1 times
[2020-10-13 06:51:10,760 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-13 06:51:10,762 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [175272945]
[2020-10-13 06:51:10,762 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-13 06:51:10,939 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 06:51:11,019 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:51:11,135 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:51:11,357 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:51:12,741 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:51:15,955 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 06:51:15,956 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1907
[2020-10-13 06:51:15,956 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-10-13 06:51:15,956 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5011
[2020-10-13 06:51:15,956 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 06:51:15,956 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-13 06:51:15,956 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-13 06:51:15,956 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 28
[2020-10-13 06:51:15,957 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-13 06:51:16,553 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-13 06:51:16,555 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 06:51:16,557 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:51:16,560 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 06:51:16,561 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-13 06:51:16,561 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-13 06:51:16,561 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-10-13 06:51:16,561 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 06:51:16,561 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-13 06:51:16,562 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-13 06:51:16,562 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-13 06:51:16,562 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-13 06:51:16,582 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-13 06:51:16,587 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 06:51:16,591 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:51:16,622 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 06:51:16,623 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 23
[2020-10-13 06:51:16,623 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-13 06:51:16,623 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 34
[2020-10-13 06:51:16,623 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 06:51:16,624 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-13 06:51:16,624 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-13 06:51:16,624 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 23
[2020-10-13 06:51:16,624 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-13 06:51:16,657 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30
[2020-10-13 06:51:16,677 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 06:51:16,692 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:51:16,729 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 06:51:16,730 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 111
[2020-10-13 06:51:16,730 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-13 06:51:16,730 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 51
[2020-10-13 06:51:16,730 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 06:51:16,731 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-13 06:51:16,731 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 108
[2020-10-13 06:51:16,731 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-13 06:51:16,731 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-13 06:51:16,749 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140
[2020-10-13 06:51:16,759 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 06:51:16,765 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:51:16,777 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 06:51:16,777 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 57
[2020-10-13 06:51:16,777 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-13 06:51:16,778 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 17
[2020-10-13 06:51:16,778 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 06:51:16,778 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-13 06:51:16,778 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 54
[2020-10-13 06:51:16,778 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-13 06:51:16,778 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-13 06:51:18,403 INFO  L134       CoverageAnalysis]: Checked inductivity of 279 backedges. 179 proven. 34 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked.
[2020-10-13 06:51:18,403 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [175272945]
[2020-10-13 06:51:18,403 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-13 06:51:18,404 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-10-13 06:51:18,404 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410242977]
[2020-10-13 06:51:18,405 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-13 06:51:18,406 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-13 06:51:18,406 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-13 06:51:18,406 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-13 06:51:18,406 INFO  L87              Difference]: Start difference. First operand 88857 states and 127678 transitions. Second operand 7 states.